A5023084816- Welding Techniques and Residual Stresses
- Additive Manufacturing Materials and Processes
- Fatigue and fracture mechanics
- Microstructure and Mechanical Properties of Steels
- Additive Manufacturing and 3D Printing Technologies
- Metal Forming Simulation Techniques
- Metallurgy and Material Forming
- Advanced Welding Techniques Analysis
- Hydrogen embrittlement and corrosion behaviors in metals
- High-Velocity Impact and Material Behavior
- Hydrogels: synthesis, properties, applications
- Catalytic Processes in Materials Science
- Engineering and Environmental Studies
- High Entropy Alloys Studies
- Material Properties and Failure Mechanisms
- Microstructure and mechanical properties
- Nanomaterials for catalytic reactions
- Advanced Drug Delivery Systems
- Numerical methods in engineering
- Advanced Polymer Synthesis and Characterization
- Advanced Photocatalysis Techniques
- Iron oxide chemistry and applications
- Engineering Diagnostics and Reliability
- Structural Integrity and Reliability Analysis
- Gas Sensing Nanomaterials and Sensors
SINTEF Industry
2018-2025
SINTEF
2016-2025
Institute of Coal Chemistry
2017-2022
University of Chinese Academy of Sciences
2017-2022
Chinese Academy of Sciences
2017-2020
Southwest Jiaotong University
2019
Norwegian University of Science and Technology
2008-2018
China Aerodynamics Research and Development Center
2018
Hebei University
2009-2011
Ningbo University of Technology
2010
Deposition patterns can significantly affect residual stress distribution in additive manufacturing processes. In this paper, a novel pattern, the S-pattern, is proposed for metal process. The finite element method used to study temperature field and of cuboid structure under S-pattern five other representative patterns: zig-zag, raster, alternate-line, in-out spiral, out-in spiral. results show that achieves lowest values both equivalent maximum principal stress, warpage close counterparts....
For many years, the oil and gas industry has utilized superduplex stainless steels due to their high strength excellent corrosion resistance. Wire arc additive manufacturing (WAAM) was used with filler wire create walls different heat input. Due multiple heating cooling cycles during layer deposition, brittle secondary phases may form such as intermetallic sigma (σ) phase. By inspecting deposited within wide range of inputs (0.40–0.87 kJ/mm), no formed low inter-pass temperatures used,...
Aluminium alloys are widely used in many industries due to their high strength-to-weight ratios and resistance corrosion. Due specific thermophysical properties intricate physical metallurgy, these challenging weld. Work-hardened may experience strength loss heat-affected zones (HAZ). The of precipitation-hardened is severely damaged both HAZ weld metal coarsening or full dissolution. thermal conductivity reflectivity aluminium causes lower laser beam absorptivity with processing efficiency....
Abstract Ensuring first-time-right on-site repair of critical structures is a key challenge for additive manufacturing (AM)–based solutions. Fast thermal simulations are thus needed to plan efficient and error-free AM processes. This paper addresses fast simulation method novel subsea wire arc (SWAAM) procedure. Current commercial finite element (FE) codes typical welding computationally expensive slow. The presented 2D difference approach can be used simulate SWAAM on damaged plate with...
Superduplex stainless steels have been used in the oil and gas industry for a couple of decades due to combination excellent mechanical properties corrosion resistance. The present investigation addresses applicability wire arc additive manufacturing this steel grade. Due inherent rapid heating cooling, initial base metal microstructure will be substantially altered, complex thermal cycles may cause formation brittle secondary phases, among which frequently observed intermetallic sigma phase...
Abstract High-power lasers are very effective in welding of plates thicker than 10 mm due to the keyhole mode. intensity generates a vapor-filled cavity which provides substantial penetration depth. Due narrow and deep weld geometry, there is susceptibility high hardness defects. Imperfections occur instability. A 16-kW disk laser was used for single-pass 12- 15-mm thick butt joint configuration. Root humping main imperfection persisted within wide range process parameters. Added arc source...
Welds made by high power laser beam have deep and narrow geometry. Addition of filler wire the arc source, forming laser-arc hybrid welding (LAHW) process, is very important to obtain required mechanical properties. Distribution molten throughout entire weld depth concern since it tends low transportation ability root. Accurate identification metal distribution challenging. Metal-cored wires can provide density non-metallic inclusions (NMIs) which are for acicular ferrite nucleation. be...
Heat input is one of the most important process parameters during additive manufacturing (AM). It great significance to understand effect heat on microstructure and nanomechanical properties, as well underlying mechanisms. Wire-arc manufactured (WAAM-ed) Al 4047 alloys under different inputs were produced studied in this work. The as-manufactured showed hypoeutectic that consisted primary (α-Al) dendrite ultrafine Al–Si eutectic. hardness strain rate sensitivity (SRS) investigated through...
Recent substantial studies indicate that high-entropy alloys (HEAs) possess superior mechanical performance, including exceptional strength, high creep resistance, etc. However, additive manufacturing (AM), a burgeoning method, may induce extraordinary impacts on the resulting properties. For additively manufactured (AM-ed) HEAs, nanoscale performance and deformation mechanisms in accordance with microstructural properties remain unclear. In this work, microstructure nanomechanical of an...
Abstract Progressing towards circular economy requires smarter and more efficient use of energy resources. Laser beam can be flexible tool for melting different metals, commonly used in cladding additive manufacturing (AM) with a wire powder feedstock. As an alternative, feedstock the form plates sheets to achieve corrosion resistant surfaces. Compared or wire, are easier process, less costly use, may come as scrap metal. This leads resource utilization. However, processing such way is not...
CeO<sub>2</sub> octahedra are prepared rapidly and they exhibit improved catalytic activity due to high concentration of oxygen vacancies exposed (111) facets.
Deposition patterns can significantly influence the distribution and magnitude of residual stress in additively manufactured parts. Time-consuming thermal-mechanical simulations costly experimental studies are often required to identify optimal patterns. A simple generic method evaluate optimize deposition pattern for purpose minimizing is urgent need. To overcome shortcomings current practice, here we propose a novel evaluation criterion. Starting from discretization by series sequence...